Cho hình vuông ABCD. Dựng khối da diện ABCDEF, trong đó và song song với AD (tham khảo hình vẽ bên). Tất cả các cạnh còn lại của khối đa diện ABCDEF bằng a. Tính thể tích V của khối đa diện ABCDEF.           

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  secondary                    ability                       creation              attendance 

• Find a mistake in the four underlined parts of the sentence and correct it:

  Lan is not a good student so she has most of her homework do by her sister.

• Choose the best answer for the following sentence:

  We spent our holiday in Rome, ____________ the capital of Italy.
  
  

• Choose the best answer for the following sentence:

  __________ she is worried about is her daughter's study result.
  
  

• Find a mistake in the four underlined parts of the sentence and correct it:

  If I made a fool of myself in front of my friends, I would have never lived it down.

• Choose the best answer for the following sentence:

  He can't ________ to her any more.
  
  

• Choose the best answer for the following sentence:

  Most of the children come from large and poor families, which ____________ them from having proper schooling.
  
  

• Choose the best answer for the following sentence:

  Mary hopes ___________ to join the private club. She could make important business contact there.
   

• Choose the best answer for the following sentence:

  What ___________ when I saw you yesterday?
   

• Choose the best answer for the following sentence:

  Ms Thuy has twenty-five students, most of ___________ are disabled.